[ 1504.444265][T17377] gre: GRE over IPv4 demultiplexer driver
[ 1504.877822][T17400] ip_gre: GRE over IPv4 tunneling driver
[ 1519.819705][T17971] ip6_gre: GRE over IPv6 tunneling driver
[ 1529.600688][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1531.520660][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1533.313660][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1535.296664][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!